College students sign up for what seems a simple paid research study, they soon realize their lives are in danger. Unfortunately they've unknowingly volunteered their bodies as human collateral in an ongoing U.S. Military experiment.
The Butterfly Effect is a 2004 American science fiction thriller film written and directed by Eric Bress and J. Mackye Gruber. It stars Ashton Kutcher, Amy Smart, Eric Stoltz, William Lee Scott, Elden Henson, Logan Lerman, Ethan Suplee, and Melora Walters. The title refers to the butterfly effect.